Improvement in harvesting-machines



UNITED STATES PATENT OFFICE.

G. WV. RICHARDSON AND R. GLOVER, OF GRAYVILLE, ILL., ASSIGNORS TO THEMSELVES AND J. B. WILLIAMS AND W. A. HORREL,OF SAME PLACE.

-IMPROVEMENT IN HARVESTING-IVIACHINES.

Specification forming part of Letters Patent No. 25,370, dated September 6, 1859.

To all whom it may concern:

Be it known that we, G. W. RICHARDSON and ROBERT GLOVER, of Grayville, in the county of White and State of Illinois, have invented a new and useful Improvement in Harvesting-Machines; and we do hereby declare the following to be a full, clear, and exact description ofthe same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon and forming part of this specification.

Our invention relates to that class of harvestingmachines-which operate the sickle by means of cams upon the main driving-wheel; and it consists in the'provision of detachable cams of peculiar form, having an acute angular bearing to tit a corresponding projection upon-the side ofthe wheel-rim and within the tire or band under which the cani is inserted. We attach the cams to the driving-wheel by means of suitable bolts and nuts` and they are readily detachable and removable therefrom, so that when any one of the cams which impart the reciprocating motion to the cutters becomesinjured or broken it may be easily and speedily removed and replaced by a new one, substantially as hereinafter described.

To enable others skilled in the art to make and use our invention, we will proceed to describe it.

In the accompanying drawings, Figure l is a plan or top view of the frame-work and driving-wheel of a harvesterwith our improvement applied thereto. Fig. 2 is a perspective view ot the same. Fig. 3 is a section through the driving-wheel, showing the application of our improvement; and Figs. 4 and 5 represent detached portions, hereinafter referred to.

Similar letters ot' reference referto the same parts in each of the several igures.

A represents the main frame of a harvesting-machine; B, the driving-wheel; C, the axle of the driving-wheel; D, the rocking arm 5 E, the rock-shaft, to which the cam D is attached; F, a supplemental arm, to the lower end ot' which is attached one end ofthe connectingrod or pitman which imparts the reciprocating motion to the cutters. The above parts,being constructed and operated in the usual form, do not require further description.

a a are the cams which impart the necessary rocking motion to the arms D and F. These cams may be cast cr wrought in sectionsof one or'more and applied to the periphery ot' the driving-wheel, to which they are secured by means ofthe bolts or screws c c. Additional screws or bolts may be passed through the center of each of the cams. The cams are further steadied in position bythe flange or shoulder b, (see Figs. 3 and 5,) bearing against angular projections on the side ofthe rim of the wheel, as shown in the drawings. These cams may be made a part of the extra furniture ot' manufacture,convenientoftransportation,and eiecting a great saving ot` time and expense in the event ofthe breaking ot' any one of said cams, it being but the work of a minute to remove sueh broken cam and replace it with a new one.

It is obvious that our invention may be applied to both sides of the wheel where the double cam is used.

Having thus described our invention, what we claim, and desire to secure by Letters Patent, is-

The cams a, east in sections of one or more the bolt or screw U and flange b, in the manner described, for the purpose specied.

GEORGE W. RICHARDSON. ROBERT GLOVER.

Witnesses:

S. J. ORANGE, C. I. CLAYTON.

the machine, being thus made an article ot and secured to the driving-wheel by means of 

